BR112012024858A2 - retorno para sistemas de mimo de múltiplos usuários - Google Patents

retorno para sistemas de mimo de múltiplos usuários

Info

Publication number
BR112012024858A2
BR112012024858A2 BR112012024858A BR112012024858A BR112012024858A2 BR 112012024858 A2 BR112012024858 A2 BR 112012024858A2 BR 112012024858 A BR112012024858 A BR 112012024858A BR 112012024858 A BR112012024858 A BR 112012024858A BR 112012024858 A2 BR112012024858 A2 BR 112012024858A2
Authority
BR
Brazil
Prior art keywords
delta
channel quality
precoding
pmi
quality degradation
Prior art date
Application number
BR112012024858A
Other languages
English (en)
Inventor
Elmar Schmidberger
Thorsten Wild
Original Assignee
Alcatel Lucent
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel Lucent filed Critical Alcatel Lucent
Publication of BR112012024858A2 publication Critical patent/BR112012024858A2/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

retorno para sistemas de mimo de múltiplos usuários. uma estação base (bs) para uma célula com capacidade de sdma (c) de um sistema de comunicações por rádio (1), adaptado para : receber as informações do vetor de pré-codificação (pmi), indicando um vetor de pré-codificação primário (w~ pmi~) em um conjunto ordenado de vetores de pré-codificação (w), receber informações sobre a qualidade do canal (cqi) indicando uma qualidade de canal quando se usa o vetor de pré-codificação primário ( w~ pmi~) para agendamento de um de primeiro equipamento de usuário (ue1), receber a informação de degradação da qualidade do canal (delta-cqi1 a delta-cqi4) indicando uma degradação da qualidade do canal durante a programação de um segundo equipamento de usuário (ue2) no mesmo tempo e recursos de frequência utilizando um vetor secundário de pré-codificação (w~ fic~) a partir de um conjunto ordenado pré-definido de vetores de pré-codificação secundários selecionados na dependência do vetor de pré-codificação primário (w~ pmi~), a estação base (bs), sendo posteriormente adaptada para: correlacionar a informação de degradação da qualidade do canal (delta-cqi1 a delta-cqi4) com os vetores de pré-codificação secundários correspondentes (w~ fci~) do conjunto ordenado selecionado com base em uma ordem de recepção da informação de degradação da qualidade do canal (delta-cqi1 a delta-cqi4). a invenção também diz respeito a um equipamento de usuário (ue1, ue2), a uma célula (c), a um sistema de comunicações por rádio (1), e a um método correspondente.
BR112012024858A 2010-04-01 2011-03-07 retorno para sistemas de mimo de múltiplos usuários BR112012024858A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP10290176A EP2375581B1 (en) 2010-04-01 2010-04-01 Feedback for multi-user MIMO systems
PCT/EP2011/053350 WO2011120760A1 (en) 2010-04-01 2011-03-07 Feedback for multi-user mimo systems

Publications (1)

Publication Number Publication Date
BR112012024858A2 true BR112012024858A2 (pt) 2016-06-14

Family

ID=42710669

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012024858A BR112012024858A2 (pt) 2010-04-01 2011-03-07 retorno para sistemas de mimo de múltiplos usuários

Country Status (8)

Country Link
US (1) US20130022021A1 (pt)
EP (1) EP2375581B1 (pt)
JP (1) JP5554875B2 (pt)
KR (1) KR101412455B1 (pt)
CN (1) CN102812646A (pt)
BR (1) BR112012024858A2 (pt)
TW (1) TWI434532B (pt)
WO (1) WO2011120760A1 (pt)

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EP2372940B1 (en) 2010-04-01 2020-09-16 Alcatel Lucent Method for scheduling users in a mobile or wireless communication system, corresponding mobile terminal and base station
US8644180B2 (en) * 2010-04-05 2014-02-04 Nec Laboratories America, Inc. MU-MIMO-OFDMA methods and systems for signaling multi-rank CQIs and precoders
JP2013543341A (ja) * 2010-11-05 2013-11-28 パナソニック株式会社 ダブル・コードブックを用いて通信システムでベスト・コンパニオン・プリコーディング行列インデックスをレポートするための方法、移動端末、基地局、およびシステム
US9504047B2 (en) * 2011-09-09 2016-11-22 Samsung Electronics Co., Ltd Method and apparatus for opportunistic user scheduling of two-cell multiple user MIMO
US9014150B2 (en) * 2012-03-06 2015-04-21 Industrial Technology Research Institute Method and apparatus of enhancing performance of downlink multi-user multiple-input-multiple-output transmissions in wireless communication system
US9935699B2 (en) * 2012-06-22 2018-04-03 Samsung Electronics Co., Ltd. Communication method and apparatus using beamforming in a wireless communication system
EP2885891B1 (en) * 2012-08-15 2016-11-30 Telefonaktiebolaget LM Ericsson (publ) Implementing codebook subset restrictions in wireless communication systems
WO2014035101A1 (ko) * 2012-08-26 2014-03-06 엘지전자 주식회사 무선 통신 시스템에서 코드북 기반 신호 전송 방법 및 장치
TWI478525B (zh) * 2013-01-23 2015-03-21 Academia Sinica 多使用者多天線系統之傳送速率動態調節機制
CN103973350B (zh) * 2013-02-04 2018-03-23 普天信息技术研究院有限公司 一种多用户传输模式的多用户配对方法
KR102285852B1 (ko) * 2013-12-17 2021-08-05 삼성전자 주식회사 전차원 다중입력 다중출력 이동통신 시스템에서 통신방법 및 장치
CN106304090B (zh) * 2015-05-13 2021-11-23 索尼公司 动态频谱接入系统中抑制干扰的方法和设备
EP3965313A1 (en) * 2020-08-31 2022-03-09 Nokia Solutions and Networks Oy Identifying transient blockage
US12009891B2 (en) * 2021-09-22 2024-06-11 Nec Corporation Codebook design for composite beamforming in next-generation mmWave systems
WO2023115398A1 (en) * 2021-12-22 2023-06-29 Telefonaktiebolaget Lm Ericsson (Publ) Method and arrangements for supporting serving of multiple wireless devices based on prediction of radio channel estimation accuracy degradation
US20230291612A1 (en) * 2022-03-09 2023-09-14 Qualcomm Incorporated Channel state feedback using demodulation reference signals

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US7346018B2 (en) * 2003-01-16 2008-03-18 Qualcomm, Incorporated Margin control in a data communication system
US7218936B2 (en) * 2004-07-07 2007-05-15 Nokia Corporation Transmitting of cell management information in a cellular communication network
KR100938088B1 (ko) * 2006-11-01 2010-01-21 삼성전자주식회사 무선 패킷 데이터 통신 시스템에서의 피드백 정보 송수신방법 및 장치
US8825099B2 (en) * 2007-01-09 2014-09-02 Qualcomm Incorporated CQI reporting for MIMO transmission in a wireless communication system
US8891489B2 (en) * 2007-03-19 2014-11-18 Qualcomm Incorporated Handover mechanism that exploits uplink channel quality of a target cell
CN101669297B (zh) * 2007-04-29 2013-02-27 华为技术有限公司 管理控制信息的方法和系统
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Also Published As

Publication number Publication date
CN102812646A (zh) 2012-12-05
JP5554875B2 (ja) 2014-07-23
US20130022021A1 (en) 2013-01-24
TW201220744A (en) 2012-05-16
KR20130007604A (ko) 2013-01-18
EP2375581A1 (en) 2011-10-12
TWI434532B (zh) 2014-04-11
WO2011120760A1 (en) 2011-10-06
JP2013524592A (ja) 2013-06-17
EP2375581B1 (en) 2012-12-26
KR101412455B1 (ko) 2014-08-06

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]
B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]